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Cornerstone · Grades 3–5 Keystones #1 22 September 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 22 September 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄5 + 3⁄6

    Answer: 9⁄10
  2. 2. Algebra Two-step equations

    Solve: 4x - 14 = 18

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 7cm

    Answer: 7.62cm
  4. 4. Ratio Sharing in a ratio

    Share 39 in the ratio 2:1

    Answer: 26 and 13
  5. 5. Statistics Mean

    Calculate the mean of: 32, 14, 24, 15, 33, 6

    Answer: 20.7

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